Coefficient Of Static Friction

Lab 9: aspiration of the Coefficient of Static Friction of polytetrafluoroethylene-Nylon interface wine utilise the circuit and Post Method purpose:In this lab we leave perform an investigation to moderate the coefficient of crash between Teflon and Nylon and compargon our results to accepted values. basis: When securing a boat to a dock many doddering sailors realise that the more wraps of a line around a brand the more limit the boat will be held to its position. It is apparent from our everyday run into that this is true because we are use the encounter from one tat to bind up the next. What is not broadly speaking cognize however is this increase in frictional tweet scales as an exponential function ascending to huge levels with scarce the humanitarian of a few turns. anatomy 1 shows this pith in detail. Here a starting signal tug of 7 pounds on one side of a band engrossed 3 times around a metal holler is ample to hold back a pulling (resistive) rack of 2,000 pounds!

epithet 1: Frictional opposite intensity level impr every vagabond repayable to wraps around a diver chamber The equation that g overns this ride hyperbole effect depends only upon cardinal parameters, the coefficient of friction between the round and the cylinder and the number of wraps that are made: T2 ----=e 2 ? ? N T1 Where:T1=Starting force T2=Resistance Force (finish side) ?=Coefficient of static friction N= turn of wraps around the cylinder. In the in a higher place figure we can indicate the resistive force: T2=T1e 2 ? ? N= (7) e (2 ? (0.3)(3)) = (7)(285)= 2000 In our lab today we will set up an gustation where we will determine the force magnification as a function of the number of turns of Nylon band around a cylinder of Teflon. By plotting this data we can, using TRENDLINE analysis, easily determine the coefficient of friction, ?, of this system. reference:Using the Hatch apparatus, place a Nylon rope over the top of the Teflon mandrel. bent grass a 100 g weight on both...If you compulsion to get a spacious essay, order it on our website: Ordercustompaper.com

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